Resistance Check
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
- Pull the locking tab on the harness connector to disconnect the 2-pin harness connector.
- Use a suitable tool to check the resistance of the DEF dosing valve.NOTE:
- Resistance specification: 9 to 15 ohms.
- If the measured resistance is out of specification, the DEF dosing valve may have been overheated.
NOTE: The resistance must be measured at room temperature (approximately 25°C [77°F]). - If the measured value is not within specifications, replace the DEF dosing valve.
- Test drive the vehicle for a minimum of 15 minutes to get the SCR system up to temperature. Check the area again for the source of the leak.NOTE: The DEF dosing system will not dose DEF until the correct SCR temperatures are reached.
- Once the source of the DEF leaks and/or deposits are identified, reference the Inspection after Removal section of this procedure.